AIR INTAKE DEVICE

There is provided an intake apparatus capable of easily mounting an air cleaner and an outdoor air duct inside an engine room and ensuring a sufficient space for maintenance. The intake apparatus includes: a bottomed tubular case having an opened end and formed with an inflow port; a cover formed with an outflow port and configured to close the opened end of the case; an air cleaner disposed between the case and the cover and provided with a filter member dividing an interior of the air cleaner into a clean side positioned on the inflow port side and a dust side positioned on the outflow port side; and an outdoor air duct configured to introduce outdoor air into the air cleaner, wherein the air cleaner and the outdoor air duct are connected through a fitting duct, the fitting duct includes a wall section defining the dust side together with the case, and the wall section is assembled in the perpendicular direction with respect to the inflow port.